Ios 7 Help! Music library missing?

I have just updated my iphone to ios 7 and downloaded the latest itunes and just noticed that most of my music library has now disappeared. The tracks are still appearing in itunes ( my iphone>on this iphone>music ) but they are not appearing when on the iphone and i have the space available for the missing tracks.

Has this happened to anyone else or does anybody have a solution?

Can charging an iphone overnight possibly hurt it?

Ok I can predict the first couple of answers: "the battery is lithium no it's safe to leave it plugged in" but hear me out. I NEVER leave my 5 charging overnight for fear of hurting it, but i decided to last night because I was playing an internet game that required me to have the internet page for it open to progress, so to get some more currency on it I left the page up on Google Chrome, not safari, all night and left it plugged up so it wouldnt die on me overnight. Then today, my phone started at 100% and died on me fairly quickly which NEVER happens to me, and I hardly used it too. And when I got home and charged it i watched a short video, this time on safari, and I LOST battery percentage even though it was plugged into the wall charger. I've narrowed it down to either me recently downloading Google Chrome (froze on me today so i deleted it and problems seem to have stopped) or the fact that I left my phone plugged up. Which is it?

Iphone 4 randomly plays music/voice control?

I've had my iPhone 4 for about a year and a half now, and I've never had this problem until a few days ago. I don't have the ios 7 software yet, and I haven't made any changes in my phone besides adding a few songs here and there. My music randomly plays/stops playing without touching any buttons, both when the screen is locked and unlocked. The voice control also pops up randomly without touching the home button or anything else, locked and unlocked again. I've tried restarting my phone but the problem persists. It happens almost constantly now, and I can't even use my phone; I've had to keep it turned off.

Why is asphalt 8 less graphic on iPod and iPhone?

Ok, so I have bought the new asphalt 8 racing game for my iPod and when I watched the trailer it was really realistic looking and there were stuff you can break but on my iPod and my cousins iPhone the graphics aren't not what they looked on the trailer and also there's not even stuff you can break. So when I check the graphics on the iPad they were just like the trailer, amazing looking and everything, I still find it fun but does game loft have like a graphic system for certain devices?

Need small prepaid talk and data plan while in Chicago this weekend?

I'm going to Chicago this weekend and want to bring my unlocked iPhone. It is too expensive for me to get an international plan which is why I want to get a local sim. I'm looking for maybe around 50-100 minutes and about 100-200mb of data. What is the cheapest prepaid plan available that would meet this criteria for Chicago?

How to transfer music from my computer to my iPhone? - 1

How do I transfer music from my computer to my iPhone? Also, if you know how, how do I transfer music from my iPhone to my computer. This question is optional, you don't have to answer it if you don't know. But, if you do, it'd be really helpful.

Green pool help how do i fix it?

GREEN POOL Help HOW DO I FIX IT?
SO I'M having a pool party for my birthday well at least I want to but it's been green for about 3 months now. My family doesn't have ALOT of money considering that their buying me an IPhone for my birthday but I just want to know how much will it cost to get the pool fixed because I don't want to have to keep from the iPhone which is $200 but I really want a party and I really want to have it with safe chemicals since other people children are entering but yeah I just wanna know how much the chlorine and other stuff will cost All TOGETHER and I've been told that it'll be $200 dollars all together so… Yeah please help

IPhone 5s, upgrade to the 16Gb or the 32Gb?

The plan I want has the different options for gigabite storage but is extra. I don't NEED it but it'd be handy to have. The 16Gb is $69 a month including phone and the 32Gb is $74 a month. Should I just spend the extra $5 a month and have heaps of music and games and photos? Or save $5 a month and conserve more?